Hiromi Nagasaku (永作 博美, Nagasaku Hiromi) is a Japanese actress and singer. She was a member of the J-pop group Ribbon. Mark Schilling of The Japan Times described her as "the best comic actress working in Japan today".
Nagasaku appeared in Kiyoshi Kurosawa's 2003 film Doppelganger.
She played a supporting role in the 2007 film Funuke Show Some Love, You Losers!, for which she won the awards for Best Supporting Actress at the 32nd Hochi Film Awards and the Kinema Junpo magazine.
She won the Best Supporting Actress award for Rebirth at the 35th Japan Academy Prize in 2012.
Funuke Show Some Love, You Losers! (2007)
Sex Is No Laughing Matter (2007)
Cast Me If You Can (2010), Aya
Wandering Home (2010), Yuki Sonoda
Rebirth (2011), Kiwako Nonomiya
The Furthest End Awaits (2015), Misaki Yoshida
True Mothers (2020), Satoko Kurihara
Until We Meet Again (2026), Minami Shimizu
Jinsei o Kaeta Conte (2026), Mom
Akiramemasen! (TBA), Ikuko Kirishima
Kōmyō ga Tsuji (2006), Yodo-dono
Mikazuki (2019), Chiaki Akasaka
Maiagare! (2022–23), Megumi Iwakura
Plastic Beauty (2026), Taeko Numata